HTC 420 VS Manual - Page 32

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Troubleshooting

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6.1.4. The machine stops immediately after starting

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6.1.5. The fuses trip frequently

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6.1.6. The machine cannot cope

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Tip!

Check the minimum recommended cable area before using an

extension cord. You will find the recommended cable area under

Technical data on page 38.

Check that there is movement between the chassis and

grinding head. If necessary, loosen one of the two pins

(310374 on page 29) in order to increase the movement

between the chassis and grinding head.

The overload indicator lights up because the speed of the

grinding discs is too high. Reduce the speed and try again.

Check the error code in the display on the frequency

converter, see Electronic error codes on page 25.

The load is too high on the distribution box to which the

machine is connected. Replace the socket or reduce the

speed of the machine.

Check the tools. Ensure that the correct tools are used, that

they are in working order and that they are correctly fitted.

Heavy load. Press the handle down slightly so that the

grinding head eases slightly away from the surface being

ground.

Sticky coating on the surface being ground. Run half of the

machine on the surface to be cleaned and half on the clean

surface. This removes any residue from the tools.

Check the tools. Ensure that the correct tools are used, that

they are in working order and that they are correctly fitted.

Voltage drop. Check that the cable area meets HTC's

recommendations.

HTC 420 VS

2.0